I tried to like this game, really I did... but it's just same same thing, over and over and over (and over) again.
Gameplay: Weak. The missions really are repetitive, and the mini-games are abysmal... they involve repetitive key bashing and are utterly braindead. But small things amuse small minds? the combat is terrible, but the driving can be fun...ultimately, there's nothing new, clever or inventive about it. And stroyline? What storyline? Every single GTA game has had the same storyline, just with a different texture to it!
Graphics: I don't really understand why these graphics were rated highly... they're polygonial, dull and uninspiring to me, and they crumble compared to those of other games. Graphics don't make a game good, no - But in this case, they don't add any value either.
Sound: In terms of music, well I guess there're some songs a lot of people can enjoy, I personally hate rap and there's a lot of that, but it does suit the game. As for other sounds in the game, namely voice acting, I should bite my tongue there.
Value: Okay, this is what it boils down to - if you've never played GTA before and want some mindless fun, I can reccomend this, but it does get old at some stage. If you're familiar with GTA, this game offers absolutely nothing new of value - and if people still find this thing fun after playing through all the prequels, then I actually pity them.
All in all, this is one of the most overrated games of all time. There's nothing special about it, although it is big and has a lot of content, much of that content is repetitive dribble. It can be fun though, but there're far better, more mentally stimulating and immersive games out there.